Problem - Kevin Tafuro

if (!(bio = BIO_new(BIO_s_mem( )))) goto error_exit;
if (!(b64 = BIO_new(BIO_f_base64( )))) goto error_exit;
BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
if (!(bio = BIO_push(b64, bio))) goto error_exit;
b64 = 0;
BIO_write(bio, *keydata, length);
free(*keydata); *keydata = 0;
if (!(length = BIO_get_mem_data(bio, &dummy))) goto error_exit;
if (!(*keydata = (char *)malloc(length + 1))) goto error_exit;
memcpy(*keydata, dummy, length);
(*keydata)[length - 1] = '\0';
return keytype;
error_exit:
if (b64) BIO_free_all(b64);
if (bio) BIO_free_all(bio);
if (*keydata) free(*keydata);
*keydata = 0;
return EVP_PKEY_NONE;
}
static int parse_line(char *line, char **ipnum, int *keytype, char **keydata) {
char *end, *p, *tmp;
/* we expect leading and trailing whitespace to be stripped already */
for (p = line; *p && !isspace(*p); p++);
if (!*p) return 0;
*ipnum = line;
for (*p++ = '\0'; *p && isspace(*p); p++);
for (tmp = p; *p && !isspace(*p); p++);
*keytype = (int)strtol(tmp, &end, 0);
if (*end && !isspace(*end)) return 0;
for (p = end; *p && isspace(*p); p++);
for (tmp = p; *p && !isspace(*p); p++);
if (*p) return 0;
*keydata = tmp;
return 1;
}
int spc_lookup_key(char *filename, char *ipnum, EVP_PKEY *key) {
int bufsize = 0, length, keytype, lineno = 0, result = 0, store_keytype;
char *buffer = 0, *keydata, *line, *store_ipnum, *store_keydata, tmp[1024];
FILE *fp = 0;
keytype = get_keydata(key, &keydata);
if (keytype = = EVP_PKEY_NONE || !keydata) goto end;
if (!(fp = fopen(filename, "r"))) goto end;
while (fgets(tmp, sizeof(tmp), fp)) {
length = strlen(tmp);
442 | Chapter 8: Authentication and Key Exchange
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